<h3>描述</h3>
<p>设置autofoucus属性，默认聚焦第一个非灰化元素</p>
<h3>示例</h3>
<p>1.不设置autofocus</p>
<ti-ipsection id="ipsection-autofocus" [(ngModel)]="ipValue" [configs]="configs"></ti-ipsection>
<br /><br />
<p>当前Ip地址为：{{ipValue}}</p>
<br />
<p>2.设置autofocus且设置灰化项</p>
<ti-ipsection id="ipsection-autofocus-disabled" [(ngModel)]="ipValue1" [configs]="configs1" autofocus></ti-ipsection>
<br /><br />
<p>当前Ip地址为：{{ipValue1}}</p>
